Finding the Fourth Proportional to 42,943.31, 64,413.92 and 16,648.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,943.31 : 64,413.92 = 16,648.06 : x
2. Step 2: Convert to fraction form
   42,943.31/64,413.92 = 16,648.06/x
3. Step 3: Cross multiply
   42,943.31x = 64,413.92 × 16,648.06
4. Step 4: Simplify right side
   42,943.31x = 1,072,366,531.55
5. Step 5: Solve for x
   x = 1,072,366,531.55/42,943.31
6. Step 6: Final answer
   x = 24,971.68